Ford F-150 - 1997-2003 :: Starts / Runs But Refuses To Idle
Aug 14, 2014
I have recently acquired a 1997 F250 LD (same body as the 150)the exhaust system is screwed(currently rebuilding it due to some IDIOT trying to cut out the cats with a grinder and cutoff wheel) and it won't idle (runs alright with a little finessing of the throttle) but after I get the exhaust rebuilt to where the O2 sensors get the proper flow I was going to clean the IAC valve but was wondering if the exhaust not feeding right would cause idle issues a well. Put things in a nutshell...the truck will run but will not idle. IAC Probs, Exhaust Probs, or combination of both??
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I have an issue with my 7.3.... the truck will not start if it sits overnight without being plugged in, even in 65 degree weather. It starts and runs with a rough idle for about 10 seconds after its been plugged in for an hour, after the rough idle is gone it runs great .. it will Stat back up as long as the truck is warm (70+).... I've replaced the batteries, glow plugs, starter (it was going bad) and fuel filter. .. also replaced the gpr today. ....
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So, I don't use my F150 too much and an animal made a nest int the intake tract and the nest material (chewed up air filter) got sucked in the throttle body all the way to IAC valve. So I thought I cleaned everything out, even got a new IAC. It starts now but just dies. I didn't remove the throttle body, should I? Where else do you think I could I find this stuff?
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Why I am getting such terrible gas mileage? The truck refuses to move off of 12 mpg. I made a 500 mile trip half of it at 70 mph running 2100 rpm. And when I filled up I calculated out 11.3 mpg. After that fill up hopped on the interstate and was running around 85 @ 2600 rpm expecting my mileage to drop even lower. Then i was on two lane hwy again constantly passing people and it only dropped to 11.1 mpg. Now no matter how easy I drive or how hard I drive it will not move over 12 mpg. Whether the tank is 100% hwy or 50/50. Its a 5 spd manual 4x4 with no modifications running the 4.6 v8. I just swapped air filters to a K&N and still no change.
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I have an 03 F-150 XLT with the 6 disc changer, and I can't get the dang thing to eject. It plays most of the cds fine (sometimes it won't play a certain couple of the six that are in the changer, and reads "CD ERROR" after trying to play the disc for a moment) but it refuses to eject any of the discs. It pushes them out just a little bit and then errors. I've attempted to pull the disc out once its pushed itself out a little, but it won't release them.
I then have to mess with it for several minutes to get it to retake the disc and quit pushing it out again, and then a few more to quit erroring when I change it to disc. I've tried to disconnect the battery (I read in a forum that that sometimes works) but to no avail. I know its a frequent issue with these. I figure I can pull the stereo out and take it apart to get the discs, but how can I fix the issue for good?
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Having some problems with my 92 Nissan NX2000. i just finished changing the clutch on the car now its acting horrible.
When i start the car, it will run decent for like 2 or 3 seconds then the idle drops down till it almost dies, catches itself, idle goes up to about 500 were it will pulse around for a few seconds until it dies. If i rev it it will stay running, kept it running for about 2 mins. but as soon as i let off it will pulse at 500 until it dies
After i changed the clutch it started up fine, it ran great for about 20 seconds before it just died. when i started it after is when the problem arose.
I took a video of the car running, which can be seen here. [URL] .... (It has never caught itself like that before and jumped up to 1000 rpms before. It normally will die at that point)
The video is really quiet, not sure what happened there. if need be i can get a video of the engine bay so its louder, was mainly focused on the RPMs.
Here's a few things i tried: Checked fuses, Changed spark plug wires, made sure they were all seated good, MAF wires were rubbed a bit so i cut the MAF pigtail off one of my other sentras and soldered it on,Changed to a good battery, Changed fuel filter, Added more gas (in cause gauge is broken), Made sure all connectors are plugged in, Checked around for vacuum leaks, found that one of the large hoses coming off the intake going to the engine had separated so i plugged them back in and nothing.
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Trucks been running perfect for 11,000 miles atleast. its last issue was a bad turbo but that was my fault. No issues whatsoever since. 10 miles down the road from work last night truck had a slight miss in between 55-60 for four or five seconds, I put the pedal down and brought it up to 75 or so just to see if it was my imagination and it felt fine so i wrote it off. It ran fine to the house we're working on i wanted to check on before I got home.
Parked it, it idled down to 650 before it came back up to 750 and it never does that and sounded different then it usually does. so i felt something was definitely up. i shut it off, was at the house about a half hour before i decided to head home, started and ran fine, three miles down the road the slight miss came back, it seemed to go away if i got on it pretty good and when i let off but just cruising with slight throttle it had the slight miss.
Got to my road where i had to slow down and turn and it idled down and died. I coasted over, unplugged the icp sensor and it cranked for 10 seconds or so and lazily came back to life. I got it home running decent and parked it. Scanned it with my old super chips tuner and it came up with a p0340 camshaft position code.
Matched my symptoms i felt so this morning i decided id go back to work and grab my spare out of my wrecked truck. truck started and idled perfect. made it to the end of my driveway before the miss came back and then it just died. took the car to work, grabbed my spare camshaft sensor and my maximus scanner, came home scanned it, no returning p0340 cam code but i swapped the camshaft sensor anyway and watched icp and ipr data, the ipr voltage is where it should be and rises while cranking while cranking.
ICP is climbing to almost 3,200 psi and it will begin to run when it peaks out. she'll fire for 45 seconds after 25 seconds of cranking or so and then it'll just die. if it sits for a few minutes it takes a few seconds of cranking before ICP will come off of 0. I've come to the conclusion that it is making high pressure oil it is just dumping it as fast as it can make it. I changed the ipr out because that can do it, it didn't change anything so I'm on to believing an injector is dumping it as fast as possible.
Is it possible for something to come undone inside the injector to make it dump high pressure oil or will a bad o ring cause this? i'm leaning towards a failing injector as when it does fire and run its definitely misfiring and i just put new o rings on them when i swapped them over from my wrecked truck but that was like 45,000 miles ago as well..
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Starts fine. Runs fine till warmed up. Then dies at idle and runs rough on gear till 1000 rpm. Has only coded iac when unplugged. But would idle with it unplugged. I replaced it. Also got crank can code once while checking it ...
2001 dodge ram 1500 318 engine ....
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So I installed my chip today. It's got anti-theft, high idle, stock, 50, 75, 100 tunes.
With the chip installed the truck starts. In all tunes except "High Idle" it idles at about 1000... normally it would be like 500-600. High idle position works (1100-1200 RPM). Anti-theft position works - it kills the truck. The throttle does nothing when pressed no matter which position it is in. Stock, 50, 75 or 100.
I removed the chip and the truck runs fine. Did these guys send me one for an automatic? Or do I have the wrong computer in my truck? My computer code is DAC3 and the truck is a 2000 with a manual transmission.
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i have a 97 ranger xl with 2.3. it was recently crashed in the front, air bags deployed. i fixed the bodywork but couldn't get it to run properly. it starts but will not idle. i have replaced the iac , evr , maf. fuel pressure holds 35-40 psi running does not leak down after engine stops
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I've taken it to a half dozen mechanics, none can diagnose the problem. From a cold start the engine idles well, but once it warms up and the fast idle setting shuts off, it begins to vibrate quite a bit. I rebuild that included an all new fuel injection system, new ignition parts (including distributor, replaced at a later date,) new wire to alternator (the old one had cracked insulation,) and a new mass airflow sensor (swapped in from a parts van-no effect.)
Basically everything is new except for the sensors (crank sensor, idle air, throttle position, etc.,) and the fuel filter and pump. I'm not getting any codes, and at least two mechanics said it had good fuel pressure. It FEELS like a vacuum problem on a carburetor vehicle, but I had the vacuum harness checked as well, and everything seems to be in order.
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My Taurus has developed a problem where it refuses to start. When I try to start it, it just cranks over and over and over. I keep trying till the battery starts getting weak. I charge up the battery and then try it again with no luck. A neighbor suggested I get a piece of lumber and gently pound on the gas tank suggesting it might be a stuck fuel pump problem [whatever that means!]. Actually it worked once but after I drove the car all day doing errands the next morning was the same problem. That was three weeks ago.
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My truck runs rough/bad when it rains or is damp out. It stutters and had no acceleration. I just had a new fuel pump put in January. It improves after a while on the road. If it's wet, my travel sucks.
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I have a 2003 Toyota Echo with 250,000 miles. It has been a great car as I commute 90 miles to work. I have had no major problems with the car. Unfortunatly it recently died on the way to work. It was running great and then all the sudden it sputtered and killed. When I first tried to start the car it would just turnover but after waiting 10 minutes it started back up (this was a cold morning). When it started it was running great again. I drove it another 15 minutes and it all the sudden died again. This happened 3 times.
I have hooked up to a scan tool and a camshaft position sensor code displayed. I replaced that but had no change. Another code came up as mass air flow sensor. I purchased a used one of those and still no change.
I have started the car up numerous times and always have the same results. It starts right up, idles good, speeds up good and runs good at full throttle. The problem becomes when it warms up the car kills. If I run it at idle to a slow acceleration it takes longer to kill than if I run the car at full throttle. Once it kills it will not start up until the car cools down, but once it cools down it will start right back up.
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For over a year, the truck took 5-6 seconds of cranking to start, but always started. This morning it started, but shakes, coughs, and vibrates like hell. It revs up but still sounds like its hitting only on a few. replaced ciols many times over the years, but this sounds different.
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The vehicle has 160,000 miles and had been running great. I pulled into traffic, put the petal to the floor, and it started stumbling and shaking. I pulled into the parking lot where I was going and expected it to die but it maintained idle but shaking real good. When I started it back up the SES light came on. I was able to coax it home but there was no acceleration, wouldn't go over 40 mph, and was still shaking bad.
I used my code reader and got the code P0340, camshaft position sensor. I replaced the sensor but it is still doing the same thing and still showing the code. It will start if I push the gas while cranking but it won't rev over 2K. I am thinking it jumped timing but most of the threads I read say they have never seen this on these engines. I want to get some opinions before I start removing the timing chain cover.
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I have a 99 F150 Lariat 4x4 with a 5.4, 150,000 mile on it. About 2 weeks ago I blew spark plug out on #2, and a friend who said he has heli-coiled a bunch of these tried to do mine and ruined the head. Anyway, I called a local engine shop and got another PI head, only I used my cam in it. Torqued it as per the book, etc... Mind you that the engine ran perfect before all this.
Got it back together with all new plugs, new exhaust manifold, and 2 new COP's. When I start it-it runs rough for about a min, then straightens back out to run perfect again, and after a few seconds you can hear a solenoid click, then it goes back to missing again. This goes on and on... I went through all the vacuum lines and checked them, checked the egr valve, put on a new IAC, new PVC, cleaned the MAF, and checked everything else with a DVM.
I took it out and drove it.... Runs good for a minute, then it goes back to missing, then back to smooth again. This just keeps going on and on. I noticed when I hear that click, it sounds like a mad rush of air being sucked in, but I cannot locate it. I ordered a new set of COP's to try next. I can understand if it just plain missed all the time, but this it intermittent. Also, the only code I can get is a too lean on bank 1, so I replaced the 90's and the pvc valve. Now no codes but still in and out of missing. It ran perfect before the new head.
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I have a 2000 E350 boxtruck with a 5.4 auto. The motor is a new rebuilt with about 4000 mile, coils were replaced with motor, injectors were rebuilt with motor.Today (500 miles from home) the truck died. I was going up a slight hill on an interstate. It will still start, but runs very rough and when I put it in gear and step on the gas it dies.
So I had it towed to a garage. While pushing it into the garage I noticed my gas cap was missing. I know it was on 45 min earlier because I got gas. Did I forget to put in back on? probably.. But I wondering if the missing gas cap could cause the truck to run bad,vary bad?
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My F150 with 175,000 miles on gave me a the ol' P0305 code indicating misfiring in cylinder #5. I changed the plugs and wires using Motorcraft wires and Motorcraft AGS34FM plugs.
Now the truck idles fine, does not give a OBD code but runs rough at 2,000-2,500 rpm. Tried it out on the highway and it started "bucking" a bit. Not sure what to try next.
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Yr 2000 F-150 with V6 . Only 68K miles. 3 weeks ago went into fast food for lunch and then truck would not start. The starter would spin it over real well and plenty of gas etc etc. I came back the next day with a tow truck to take it to the dealer and it cranked and ran perfectly for 3 weeks till yesterday. Same thing. Will not start in parking lot of grocery store.
I only have one key and someone suggested that it could be the chip in the key or the theft system acting up. I only have one key from when I bought the truck 7 years ago used. Someone else said when the anti theft system is screwing up, the motor will be totally dead and starter will not work.
This time I am again planning to tow to the dealer and I fear a huge bill for something that is actually very tiny at fault since the truck runs perfectly well and then mysteriously will not start. This is the 2nd time in 3 weeks I have been stranded. I pulled all the fuses and reinserted. I checked all spark wires and they are in good shape and tight. What could it be that all of a sudden causes the engine to not start up and run intermittently ?
It is something I can do myself and I am pretty capable. I replaced in the last year water pump, power steering pump, ball joints and alternator. So what is not getting..... fuel or spark? The only two things we need for to run ... right ?
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Truck starts right up. Will die if I dont give it some gas for about 5 seconds of so. No check engine lights. I did leave the hood open yesterday adn the auto sprinklers came on. I completely forgot about it. I check the air filter before I started it and its dry so I dont feel its water intrusion. I shot a quick burst of carb cleaner in the IAC and then reinstalled it. No joy. When running it will idle and runs fine. If I unplug the IAC it stumbles and almost dies. Any way to test the IAc, TPS or MAF sensor ? I hate just throwing parts at them without diagnosing them properly.
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